12123050189 has 2 divisors, whose sum is σ = 12123050190. Its totient is φ = 12123050188.

The previous prime is 12123050171. The next prime is 12123050207. The reversal of 12123050189 is 98105032121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12123050171) and next prime (12123050207).

It can be written as a sum of positive squares in only one way, i.e., 7870706089 + 4252344100 = 88717^2 + 65210^2 .

It is a cyclic number.

It is not a de Polignac number, because 12123050189 - 2⁸ = 12123049933 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123050389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061525094 + 6061525095.

It is an arithmetic number, because the mean of its divisors is an integer number (6061525095).

Almost surely, 2^12123050189 is an apocalyptic number.

It is an amenable number.

12123050189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123050189 is an equidigital number, since it uses as much as digits as its factorization.

12123050189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 12123050189 in words is "twelve billion, one hundred twenty-three million, fifty thousand, one hundred eighty-nine".